Coil winding machine



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July 12, 1955 R. G. MARZOLF 2,712,836

COIL WINDING MACHINE Filed July 24, 1951 8 Sheets-Sheet 8 United StatesPatent COIL WINDING MACHINE Robert G. Marzolf, Snyder, N. Y. ApplicationJuly 24, 1951, Serial No. 238,311 12 Claims. (Cl. 140-921) Thisinvention relates to coil-winding machines, particularly adapted for usein the winding of coils for electrical motors, although not limited tosuch use.

It is an object of this invention to provide improved arrangements forstarting the winding of the coils, completing such winding, and removingthe finished coils from the machine, with a minimum of labor.

It is a further object of this invention -to provide an improved machinefor winding stringsof connected coils, each coil of which may consist oftwo or more electrically separate windings, in order to facilitatemounting of such coils in motor frames, and to minimize the time andlabor required for their connection, and reduce the possibility ofincorrect connection.

It is still a further object of this invention to provide a machine ofthe class described which is relatively simple and economical toconstruct, and which requires little maintenance.

The features of novelty which I believe to be characteristic of myinvention are set forth with particularity in the appended claims. Myinvention itself, however, both as to its fundamental principles and asto its particular and preferred embodiments, will best be understood byreference to the specifications and accompanying drawing, in which,

Fig. l is a side elevation of a machine in accordance with oneembodiment of my invention;

Fig. 2 is a top plan view thereof;

Fig. 3 is a diagrammatic illustration of a string of connected coils,each with two windings, as made on the machine;

Fig. 4 is a section on lines 4-4 of Fig. 2;

Fig. 5 is a sectiOnon lines 5-5 of Fig. 4;

Fig.6 is a detail view, partly in section, of a wire thrower or flyeremployed in the machine;

. Fig.v 7 is a view on lines 7-7 of Fig. 6;

Fig. 8 is a view on lines ,8-8 of Fig. 6;

Fig. 9 is a perspective view of the rear coil form;

Fig. 1G is a similar view of the front coil form;

Fig. 11 is a section on lines 11-11 of Fig. 2;

Fig. 12 is a section on lines 12-12 of Fig. 11;

Fig. 13 is a section on lines 13-13 of Fig. 12;

Fig. 4 is a section on lines 14-14 of Fig. 2; v

Fig. 15 is a section on lines 15-15 of Fig..l4;

Fig. 16 is a perspective view of a'finished coil; J

Fig. 17 is a top plan view of a modified form of my invention; s

Fig. l8,is a. section on lines 18-18 of Fig. 17;

Fig. 19 is a section on lines 19-19 of Fig. 20;

Fig. 20 is a section on lines 20-20 of Fig. 19;

Fig. 21 is a detail section showing a completed coil in position;

Fig. 22 is a similar view showing removal of the coil, and

Fig. 23 is a section on lines 23-23 of Fig. 22.

Referring first to the embodiment of th invention shown in Figs. l-16,the machine comprises a base 11, from which rises pedestal 12, carryingtable 13. Mounted 2,712,835 Patented July 12, 1955 on the table forindexing rotation about a vertical axis is turret 14, in this instancearranged to carry eight coil forms 15 mounted on the periphery of theturret, each with its axis horizontal. Secured to the turret forproducing indexing, or step-by-step rotation, is the turret drive lever16. In the embodiment shown, this is manually operated, but othermechanisms, well known in the art, power driven, if desired, may beemployed to index the turret.

As many winding stations may be provided as there are desired separatewindings on each coil. In this instance, I have shown two, 18 and 20,one being a duplicate of the other, so that only one need be describedin detail. Mounted below the table is the motor 22, driving the winderat station 18 through belt 24, for example. Motor 22 is started andstopped, and its speed controlled, by rheostat 26 which may be mountedon the side of pedestal 12 in position to be operated by the knee of theoperator at are therefore not described in detail.

Wire 28 is fed from spool 39 in container 32, passes up through anopening 34 in base plate 36 of bracket 33 mounted on table extension 13aand over pulley 40 mounted at the upper end of said bracket. Preferablytwo turns of wires are taken over pulley 40, and the wire then passesaxially down the hollow center 44 of the flyer or winder shaft 42mounted in hearings in housing 46. The forward end of shaft 42 carrieschuck 48 which has an off-center opening to receive arm 50a of flier orwinding arm 50 extending diagonally outward and toward turret 14 (seeFig. 6). Flier arm 50a is retained in chuck 48 by any suitable means,such as set screws 48a. Winding arm 50 also carries feed arms 50b, 56c,and 50d, each having a pulley, 50e, 50], and Stig, over which the wirepasses in turn (Fig. 6). As the winding arm 50 rotates, carried by shaft42, driven in turn by pulley 25 secured thereto, and driven by belt 24from motor 22, the outer end of arm 50 moves in a circular patharoundcoil form 15, and (the end of wire'28 being attached) the wire 28is wound about the coil form. v

The coil form 15, in this embodiment of the inven-' tion, comprises apair of H plates, back plate 15a, and cooperating front plate 15b. Thelegs of the H of back plate 15a may have counterbored openings 15c bywhichplate 15a may be secured to turret 14 by suitable bolts 15a, andback plate may have a central boss 15e, rectangular in shape (forrectangular coils) tapered and polished to facilitate removal of thefinished coil. The face of boss 15a may have squared stud 52 and clampboss 54 to receive andhold front plate 15b, with a sliding fit, and bothfront and rear plates are provided with'registering tape-receiving slots15 and front plate 15b has also stud receiving slot 15 to permit slidingfront plate 151; vertically downwardly on stud 52. In preparation forwinding a coil, adhesive tape strip 56 and 58 may be laid in slots 15with their ends temporarily pressed on turret 14 and clamp boss 54 (seeFig. 6). After completion of the coil winding, the projecting ends oftape strips 56 and 58 are wound around the respectiveportions-of thecoil and pressed down, to secure the coil (see Figs. 15 and 16). .'Frontplate 15b may then be lifted off and the coil removed from the form.This action, however, ordinarily does not occur until the turret hasindexed the coil to position 6,- where the ejector mechanism is mounted.

Turn counter 60 is suitably geared to flyer shaft 42, to show the numberof turns applied in Winding.

To provide for level winding, the entire flyer assembly is mounted forsliding movement axially toward and away from coil form 15, as shown bythe arrows in Fig. 1.

station 18. Such rheostats and. their construction and connection arewell known and 62,.closed by retaining screw 1 62 while permitting it toFor this purpose, base block 62 has an opening 63 to receive feed lever6d (Figs. 2, 4 and pivoted on pin 65 for swinging movement in ahorizontal plane, and urged in a counter-clockwise direction by plunger66 riding on spring 67 in receiving opening 68 in base block 69. Baseblock 62 has a wide, shallow groove 71 to receive flange plate 72secured to the base of fiyer carrier housing 46, in which flyer shaft 42is journalled, and retainer plates 73 are secured to base block 62 onopposite sides and serve to retain flange plate 72 and flier carrier 46on base block slide axially. Pin 74, mounted in fiyer carrier 46,extends downwardly through flange plate 71 and the upper part of baseblock 62, and through longitudinal slot 64a in feed lever 64 andterminates in a slot (not shown) in the lower portion of base block 62.

From the foregoing, it will be understood that as the feed lever isswung back and forth, pivoting on pin 65, .pin 74 in slot 64a is movedback and forth path, carrying with it the flyer carrier and flier,distributing the wire of the winding in a level manner. It will beunderstood that any well known automatic feed mech anism may be employedfor the purpose, instead of the manual means shown, but for simplicityand economy of machine construction and maintenance, I prefer the manualmechanism shown. The machine operator finds it a simple matter to workthe feed lever as the coil is I being wound. A second winding mechanism,like that already described, is shown at index station 3, and, if used,27

is manned by another operator. The manner of use of the two windingmechanisms will now be described.

As the winding at station 1 is completed, the operator stops motor 22,preparatory to indexing the turret one step, performs the indexingoperation, bringing an empty I and taped coil form to flyer 50, and thenext coil .is started by starting the motor. No break has been made inthe who, so the last turn on the first coil leads to the first turn ofthe next coil. On completion of the first winding of the second coil,the motor at station 1 is again stopped, the turret indexed, and thethird coil started. The second indexing has now carried the first coilto station 3, and the operator at this station puts on the secondwinding, surrounding the first winding. The

indexing continues until coils reach station 6, where they are ejected.This method of winding the coils is diagrammatically sho'wn in Fig. 3.

To facilitate ejection, ejector lever is provided, pivoted at 81 inbracket 82 mounted under the table 13,

and has'pusher head 83, engaging and raising ejector w plunger 84carried in opening in table 13 and the ejector housing consisting oflower front plate 85, rear plate '88, and upper front plates 86 and 87,the housing forming a vertical track for plunger 84 and rectangularejector plate 89 carried by the plunger.

As the turret indexes a coil to station 6, the top of ejector plate 89lies directly under front coil form plate 15b. The operator at thisstation pushes down on ejector lever 80, and plate 39 engages and pushesup front coil form 15b to clear boss 54, as shown in Figs. 14 and 15,whereupon the operator may lift it oft, and then restores lever, 89 toinitial position, dropping plate 89 out of the way, 'soTthat the coilcan be removed from back coil form 154. The operator then replaces frontform 151;, applies thetape strips to the for-in as already mentioned,and the form is ready to receive another "winding.

The turret 14 is mounted on turret shaft 90 (and may beshrunk on) withinhollow column 91, and its weight is carried on thrust bearings 92 ridingin grooves 92a onlthe under side of turret 14 and the upper surface ofcolumn 91. Bearings 94 and 95 may -also be provided, fittingcorrespondingly shaped recesses at the upper and lower ends of column91, which may be secured to table 13 by bolts 93.

V Shaft 90 has a downwardly projecting pot-tion 90a of in a linearreduced diameter, and a still further reduced end portion 90b, carryingretaining collar 96 held by set screw 96a. Bearings 102 may surroundshaft portion 90a within table 13. Below bearings 102 I provide flangeddrive collar 98, pinned to shaft 90a by pin 101, having a series ofindex notches 93a around the periphery of the collar flange 9812. Aboveflange 98b I provide a stationary collar 99, bolted to the table, andhaving one indexing notch only, as at 99a. Below collar 98 there isprovided a bearing 93c and rotatable on bearing 980 the turret drivelever 97, arranged to swing back and forth in a'short are as in Fig. 12.

The outer end of lever 16 carries a vertically extending hollow handle1'03, and within handle 103 there is release rod 104, carrying at itsupper end release but ton 105.

The lower end of rod 104 bears on bell crank lever 106 pivoted at 107and connected to arm 108, pivoted at its forward end at 112 to latch109, sliding between guides and having vertical extension 111. The latchis urged into the indexing notch 98a by spring 113 bearing against stop114. Rotation of the turret in one direction only is permitted by pawl118 riding in index notches 98a, pivoted at 119, and spring pressed intonotches 93:: by spring 120 fulc'rumed on pin 121.

To index the turret, the operator takes handle 103, presses the releasebutton 105, and swings lever 76 counter-clockwise as in Fig. 12 untillatch 109 engages the next indexing notch. Returning the lever toinitial position will now rotate the turret to the next indexedposition. It will be seen from Fig. 13, that latch 109 does not go allthe way into notch 9%, being stopped by engagement of the forward sideof vertical extension 111 the turret in position.

with the outer surface of collar 99. When the turret reaches the indexposition, the upper extension 111 registers with index notch 99:: instationary collar 99, and the latch then moves all the way forward,locking Excessive movement of lever 16 is prevented by the configurationof theedge of the table, as will be seen from Fig. 2.

To count the coils, suitable counting mechanism 122 may be provided,having counteractuating arm 123 engaged and moved by pins 124, one foreach coil form.

cit

The space between coil forms may be covered by downwardly and inwardlyprojecting shields 125.

In the operation of the embodiment of the machine so far described, fourpersons are employed; two winders, one taper, and one demounter.

In the embodiment of the invention shown in Figs. l7-23, table 13 isprovided with a rotor or coil form wheel 201, mounted for rotation on ahorizontal axis on pedestal 251. The wheel is removable in a manner tobe described, and to reduce its weight is provided with a multiplicityof triangular cut-outs 203 and radial slots 204, and carries a number ofcoil forms 202, symmetrically mountedaround the axis. in the embodimentherein described, eight forms are shown, but a larger or smaller numbermay be provided.

Indexing holes 205 may be formed for locking the wheel 2d} at eachindexing position, and wire winding coil for-tn wheel is made movabletoward and-away from the winding mechanism, in a manner to be described.

A pin 208 is provided near the periphery of wheel 201 near one coilform, to which the end of the wire may be fastened when starting to windcoils, and a number of grooved pins 209, one for each coil form, arepositioned symmetrically around wheel 201 radially inward from the coilforms and "between them to receive and support the wire where it passesfrom one coil to the next, as will be seen from Fig. 18.

Each form may be made u of 'a generally til-shaped emasaa back plate211, secured to wheel 201 by bolts 212a (Fig. 18), carrying a projectingcentral tapered stud 212, terminating in threaded portion 213 to receiveclamp nut 214. The front coil form plate 215 is likewise generallyH-shaped and is made up of two portions 216 and 217, having inwardlyprojecting central portions 218 and 219, having central tapered hole 220to fit stud 212. The two portions 216 and 217 are secured together inany suitable manner, as by bolts 221. To assure assembly of the frontand back plates in correct position, the back plate may carry locatingpin 222, fitting into the space between the two halves of the frontplate (see Fig. 18). When the front plate is removed from the backplate, the two halves may be pressed into contact, as in Fig. 23. Toassure the clearance space between the two halves of the front platewhen bolted together, the bolt holes may be stopped so that the boltscannot bring the two halves into contact.

The coil form wheel is arranged to be quickly demounted from the machinewhen desired, usually after all of the coil forms have been wound. Forthis purpose, a hollow central hub 230 is secured to wheel 201, as byrivets 232 engaging the wheel and circular flange 231 carried by hub230. Hub 230 also has a smaller circular flange 233, bevelled at 45 onits back-side, fitting a registering groove 233a in the bearings 234 and235. The lower half bearing 234 is stationary, while the upper halfbearing 235 is pivoted as at 236 for swinging movement, to openposition, shown in dotted lines in Fig. 20, and is releasably held inclosed position by latch 240 having hook 241 engaging keeper 241a onlower bearing 234. Latch 240 is pivotally mounted at 242 between ears243 carried on upper bearing 235, and is spring pressed in a clockwisedirection by spring 244.

For level winding, the form wheel may be shifted axially, by feed lever250 pivoted on pedestal 251 mounted on table 13 and connected to slidingshaft 252 which is pinned by pin 253 to butt plate 254. The lower halfbearing 234 is securely mounted by any suitable fastening means to thebutt plate 254 and the spring 255 urges butt plate 254 and bearings 234and 235 to the left as in Figs. 17 and 19. By pressing more or less onlever 250 the form wheel 201 is moved axially to distribute the windingturns axially as desired.

Looking at indexed positions is accomplished by index pin 260 passingthrough indexing holes 205 in wheel 201, flange 231, lower bearing 234,and butt plate 254, having enlarged head 261 engaged on its front sideby bifurcated lever 262 pivoted at 263 on cars 264 of butt plate 254.Pin 260 is biased to locking position by spring 265 surrounding pin 260in an opening in lower bearing 234, and engaging, at one end, butt plate254, and at the other, pin 266 in index pin 260.

To wind coils having more than one winding, a plurality of windingstations may be provided as shown in Figs. 1-16, but this is notnecessary, be applied during one rotation of the coil form wheel, and asecond winding on top of the first during a second rotation, a thirdduring a third rotation, and so on. If the wire is not broken or cut,all windings are in series, with only two ends of wire. With the machineof Figs. 1-16, on the other hand, all first windings are in series, withfour ends of wire.

In the foregoing specification I have explained the principles of myinvention and the best mode in which I have contemplated applying thoseprinciples, so as to distinguish my invention from other inventions; andI have particularly pointed out and distinctly claimed the part,improvement, or combination which I claim as my invention or discovery.

While I have shown and described certain preferred embodiments of myinvention, it will be understood that modifications and changes may bemade without departing from the spirit and scope thereof, as will beclear to those skilled in the art.

as one winding may and ejector means spaced a first one of said stoppositions and in winding registry with successive ones of said coilforms as said forms are successively rotated to said first stopposition, and an ejector mechanism positioned adjacent a second one ofsaid stop positions, said ejector mechanism comprising an ejector platepositioned to be coplanar with each of said retaining plates as saidforms are successively rotated to said second stop position, and meansfor selectively moving said ejection plate into forcible contact withsuccessive ones of said retaining plates at said second stop position.

2. In a coil winding machine, a base, a rotor mounted thereon for stepby step rotation to a plurality of stop positions, coil forms mountedaround the periphery of said rotor with their axes extendinghorizontally, said forms each comprising a back plate aflixed to saidrotor and a front plate removable from said coil form by slidingmovement perpendicular to the coil form axis, a winding mechanismpositioned adjacent a first one of said stop positions and in windingregistry with successive of said coil forms at said first stop position,and an ejector mechanism adjacent a second of said stop positions, saidejector mechanism including a member selectively movable into forcibleengagement with each of said front plates as each of said coil forms aresuccessively moved to said second stop position thereby selectively toslide each of said front plates in a direction perpendicular to itsrespective coil form axis.

3. The combination claimed in claim 2 in which said front plate isremovable by vertical movement, the said movable member of said ejectormechanism being mounted for vertical movement.

4. The combination of claim 2 in which said winding mechanism comprisesa flier arm selectively rotatable about each of said coil forms at saidfirst stop position in succession, and means for reciprocating saidflier arm with respect to the longitudinal axis of a coil form at saidfirst stop position to level-Wind each coil at said stop position.

5. The combination of claim 2 including a further winding mechanismadjacent a third one of said stop posi tions, whereby plural coils maybe wound upon a given coil form by moving said form from said first tosaid third stop positions.

6. In a coil winding machine, a rotor mounted thereon for step by steprotation, coil forms mounted on said rotor, a first winding mechanismpositioned in winding registry with a coil form for stop positions ofsaid rotor. a second winding mechanism operable independently of saidfirst winding mechanism and positioned in winding registry with anothercoil form for stop positions of said rotor, said coil forms eachcomprising a back plate affixed to said rotor and a front platedetachable from said coil form by sliding movement in a predetermineddirection perpendicular to the longitudinal axis of the coil form, fromboth said first and second winding mechanisms and adjacent said rotor,said ejector means including a force transmitting member selectivelymoveable into engagement with the front plate of each of said coilsafter said coils have passed said second winding mechanism, and meansfor moving said force transmitting member in said predetermineddirection thereby to detach the front plate from each of said coil formssuccessively after winding thereon has been terminated.

7. In a coil winding machine, a supporting structure, a rotary memberrotatably mounted on said supporting structure, a plurality of coilforms mounted on said rotary member, means for indexing said rotarymember and the coil fo'rrns thereon in a step by step motion to aplurality of stop positions, a first winding mechanism mounted on saidsupporting structure adjacent one of said stop positions and in windingregistry with each of said coil forms in succession, and a secondwinding mechanism operable independently of said first windingmechanism, said second winding rnechan'isrn being mounted on saidsupporting structure adjacent a further stop position of said rotor andcoil forms.

8. The combination of claim 7 in which said rotary member has asubstantially vertical axis of rotation with respect to said supportingstructure, said coil forms being mounted on said rotary member withtheir aXes horizontal, each of said winding mechanisms comprising aflier arm for feeding Wire, means for rotating said flier arm around thehorizontal axes of said coil forms, and means for reciprocating saidflier arm in a direction sub stantially parallel to the horizontal axesof said coil forms.

9. The combination or" claim 7 in which said coil forms each include acoil retaining plate selectively detachable by sliding movement in apredetermined direction perpendicular to the coil form axis, and ejectormeans mounted on said supporting structure adjacent a still further ofsaid stop positions, said ejector means including a force transm'ittingmember selectively movable in said predetermined 7 direction to engageselectively each of said retaining plates at said further stop position.

10. A form for Winding coils comprising a first retaining flange, anelongated central projection aiiixed to said first flange andsubstantially perpendicular thereto, said central projection having asquared stud afiixed thereto at the terminus thereof removed from saidfirst flange, and

a second retaining flange substantially parallel to said first flange,said second flange defining an open ended rectangular slot near thecenter thereof and so dimensioned as to slide on said squared stud onlyin a direction sub stantially perpendicular to the longitudinal axis ofsaid central projection.

ll. The coil form of claim 10 in which said central projection definesan elongated depress-ion substantially parallel to the longitudinal axisof said central projection for the reception of a tape strip. 7

12. The form of claim 11 in which each of said first and secondretaining flanges are shaped in the form of an H, the legs of saidH-shaped flanges being substantially parallel to one another, saidcentral projection being substantially rectangular in cross section andsaid elongated depression comprising a pair of recesses opposinglydisposed along said central projection and between the legs of each H,whereby a pair of tape strips may be respectively placed in saidrecesses and each of said tape strips may extend past said retainingflanges between the legs thereof.

References Cited in, the file of this patent UNITED STATES PATENTS

